Top-open padlock: The key is on the lower part of the lock, and the lock beam (lock hook) comes out after unlocking.
1. Straight open padlock
2. Horizontally open padlock
3. Beam padlock (also known as giant padlock)
4. Password padlock: Because the padlocks opened by the key have a high mutual open rate, especially the smaller size padlocks, the high mutual open rate is not applicable.
Therefore, a password padlock has been developed. Its characteristics: up to 10,000 passwords.
